5/16x+2 3/4=6 1/8 croчно
5/16 х + 2 3/4 = 6 1/8 5/16 х = 6 1/8 - 2 3/4 5/16 х = 5 9/8 - 2 6/8 5/16 х = 3 3/8 х = 3 3/8 : 5/16 х = 27/8 * 16/5 х = 54/5 = 10 4/5 = 10,8